Sash lock



' vide a` base plate 5 havingy oneor more;

Patented Bec. 11, 1923.

LIN-ETE ST 'E s earner werten.;

WILLIAM HOLSTEIN, or CHICAGO', ILLINoIsi SASH LOCK.'

Application' tiled February 27, 1922.' Serial Nfof539'33725 To @ZZ whom' it" may concern: f

Beit knownthat I, WILLrA-M HOLSTEIN,- a citizen of theUnited States, residingat Chicago, in the county of Cook/and' State of illinois, have; invented certain new and useful Improvenients.inl Sash Locks, ofV

adjacent rails of'two Wind-ow sashes onl one doors or sashes such, for" instance, as is' shown fragmentarily in Fig. l Where rthe upper rail A of `an -innerzsash lies adjacent the lower raillfB offany outer sash. Thelookis mounted upon the rail Arof the inner sash' so asto present onel of its elements in juxtaposition to a Verticali rai-1V C of the outer sash for the purpose of engaging therewith when desired.

The device Vwhich constitutesiny invenL tion comprises three principal4 elements, riz,- the bracket D inl which is pi-votallfy mount* ed a holder E for a vfriction block F. The bracket D may be formed from sheetnietal which is suitably shaped and bentto proapertu'res therein through each ofwhiclr is inserted a nail or'screw T forsecuring. the device to the rail A ofthe inner sash. EX- tending upwardly from opposite sides of thehase are twosupporting arms-8 of any' suitable configuration, each havingvnear its upper edge an openingy adapted-toV receive the ends-9 of a' pivot pin..

Associated with afbracket of the general kind describedais' aholder E preferably formed from-a lbla'nk lsuchasis shown in Fig. 3. When folded into shape, the holder comprises abottoml lO'froni-each side of Whichertends upwardly 1f-retaining Wall il,

34 shows theY blank from Whichthev the `reagr ends -12 of :whichi are. bent around l toward-each other InoVerla-ppmg relationY sof as to provi-de aqbackgof double thick-ness, asbest shown ini Fig.l 2t

Secured Within the holder .justf'describedi' is af-friction block F preferablymade L of rubf ber hardened-to a desireddegree This block is rectanguflfafrv in sha-pe and yoffaf'sizeI to restuponv the holder bottonez l()` and f be confined between its two retainingwalls 11. When. so positioned with one of its edges adj aeent the holder back, as shownin. Fig. 2, the; block- Inay be secured therein-'as through the rnedi-:uin o-f afscrew 175 having an eye 16 yat'its. outer end and a flange 17 adapted to abut the outer rear Wall 12-when-v in final.posi-tion.y The shan-kof the screw,-whichisfthreaded intheV ordinary manne-r, is adapted toenter into the rubberblock; vso asl to engage'lthere# with, therebyl providing a meansiofsecuring;

the block yWithin the holder. Thebloelemay be formed W-ithA anl open-ing; 20- Vrelativel-y close to one of its cornersl (or, `ifdesired,`r WithA asimi-lar opening in`- each o-fits oor ners adapted to register with otherl open-1 ings 121 vformedtin the retaining Wal-1s ofthe holder. Through the holes thusformedinv the holder, .as Well-as the openings inthe bracket supp,or-ting farms 8,-is4 inserted a p-in Whose ends 9 may be upset or otherwise formed to maintain the holder inper-manentlypivota-lfrelation therewith. This'pi-n traverses also thefrictionhlock, passingthrough one of its corner'openings QOand acts, in'- dependentlyofthe screw eye, tosecure theI block-'Within/the holder. Y i

It is preferred that the four edges ofthe block, each of Which is of a substantialarea, shall be corrugated, serrated, or]y otherwise roughened, as indicated by thenuineralf 23,- soA that whenl the devi'cevis positioned relai tively close toga-n outer sash, as indicated in LFig; l, one of .thesev roughened -edges Wil-lv engage withv the sash; rail' C with suchfriction as ,tol effectively resist.' any sliding` move"-K ment thereofarelative'tofthe inner sash.Av The normal locking.v positionofthe` device is about as indicatedby the-fulllines-inpFig.;1.- Ifanr effortbe made :tof forcibly slide either sash relative to the; other, ,the block,l through its f-rictiona'l i engagement with. the y outer sash', will resist this Inovenient,yielding perf,

haps to a slight extent. Its maximum yield is about as indicated by the dotted lines where it will be noted that the outer lower corner 24 of the block has come into contact with the base plate 5, or sash rail A, the material of the block being compressed to a considerable extent during this movement. No further pivotal movement can take place, however, and consequently neither sash can be opened relative to the other. It is to be noted that in this position of maximum pivotal movement, the block has turned slightly less than 45, in which position its body is compressed to the maximum that is possible. This is of importance because, unless the pivotal movement of the block be arrested at about this place, its .continued rotation would carry its engaging face past the point of maximum radius with a resulting diminution of pressure upon the sash rail C; in such circumstances further perseverance of an intruder would probably en-s able him to force the lock.

Normally the friction block is turned back to an inoperative position as shown by the other set of dotted lines in Fig. il, where it will be noted the eye 16 of the screw is rested'upon the bracket base, or upon the sash rail A, to sto-p this reverse movement. These operations of the block may perhaps be facilitated, by tying to the screw eye a cord (not shown) which will facilitate manipulations thereof. In swinging the block forwardly into engaging position with the sash rail C, it is important to note that the lower outer corner 24 comes in contact therewith only slightly in advance of the entire engaging face due to the fact that the pivotal mounting` of the block and holder therefor is situated very close to one corner thereof.

It is to be observed that the parts which comprise my invention are few in number, and may be readily assembled so as to insure operation with certainty. Modifications of this construction within certain limits are, of course', possible without departing from the spirit of my invention, and are to be deemed as within the purview thereof, if embraced within the language of the claims following.

I claim: e

l. A sash lock of the kind described comprising, in combination, a bracket having two supporting arms in spaced relation, each provided withy an opening which registers with the other, a holder formed of sheet metal which is bent to provide a bottom from which extend two retaining side walls, each of the latter having portions bent toward the other in overlapping relation Ito provide a back, and a rubber block of generally rectangular shape adapted to be received within the holder with one edge resting upon the bottom, another edge against the back, Aand two of its sides confined in part by the retaining walls thereof, and means for securing the block within the holder comprising a pin passing through the body thereof and through two openings formed in the retaining walls of the holder, the pin extremities passing also through the openings in the bracket supporting arms to provide a pivotal mounting for the holder therewithin, substantially as described.

2. A sash lock of the kind described comprising, in combination, a bracket, a holder, a yieldable friction block supported within the holder, and means passing through the bracket, holder, and block adapted to provide a pivotal mounting for the holder and to retain the block therewithin, substantially as described.

3. A sash lock ofthe kind described combracket base a distance which permits its downward rotation thereupon of less than 45 degrees from the horizontal, substantially,v

as described.

4. A sash lock of the kind described comprising, in combination, a friction block of general rectangular shape having its edges suitably roughened, a holder for the block consisting of a piece of sheet metal bent to provide a bottom which engages one block edge, two sides which lie adjacent portions of opposite sides of the block, and a back formed by rearward extensions from each holder side, each lapping the other, theback engaging another side of the block, means for securing the block within the holder comprising a screw passing through the double back of the holder to engage with the block and having a portion of itself engaging the outer holder side, and means providing` a pivotal connection. between the holder and a support therefor, substantially as described.

5. A sash lock of the kind described comlll) prising, in combination a holder formed -of .l

through the double back of the holder engaging with the block for retaining the same therewithin, said means having a portion extending rearwardly of the back to provide a stop for the holder when rotatedin ya reverse direction, substantially as described.

G. A sash lock of the kind described coinprsing, in combination, a holder, a yieldable rectangular friction block supported within the holder, a support, means extending through the block, holder, and support -5 adapted to provide a pivotal connection for the holder relative to the support and to retain the block xedly Within the holder, the

yblockbeing-eo related to thesupportas to have a downward swinging movement thereupon of lese than 45 degrees from the hor- 10' 

